31440143419 has 2 divisors, whose sum is σ = 31440143420. Its totient is φ = 31440143418.

The previous prime is 31440143381. The next prime is 31440143473. The reversal of 31440143419 is 91434104413.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 31440143419 - 2⁷ = 31440143291 is a prime.

It is a super-2 number, since 2×31440143419² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (31440141419) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15720071709 + 15720071710.

It is an arithmetic number, because the mean of its divisors is an integer number (15720071710).

Almost surely, 2^31440143419 is an apocalyptic number.

31440143419 is a deficient number, since it is larger than the sum of its proper divisors (1).

31440143419 is an equidigital number, since it uses as much as digits as its factorization.

31440143419 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20736, while the sum is 34.

The spelling of 31440143419 in words is "thirty-one billion, four hundred forty million, one hundred forty-three thousand, four hundred nineteen".